1.įind the test statistic and the corresponding p-value. Determine a significance level to use for the hypothesis.ĭecide on a significance level. These two hypotheses need to be mutually exclusive, so if one is true then the other must be false.Ģ. ![]() State the null and alternative hypotheses. Hypothesis TestsĪ hypothesis test consists of five steps: The alternative hypothesis, denoted as H 1 or H a, is the hypothesis that the sample data is influenced by some non-random cause. The null hypothesis, denoted as H 0, is the hypothesis that the sample data occurs purely from chance. There are two types of statistical hypotheses: To test whether a statistical hypothesis about a population parameter is true, we obtain a random sample from the population and perform a hypothesis test on the sample data. ![]() is the population parameter.Ī hypothesis test is a formal statistical test we use to reject or fail to reject a statistical hypothesis. ![]() The assumption about the height is the statistical hypothesis and the true mean height of a male in the U.S. A statistical hypothesis is an assumption about a population parameter.įor example, we may assume that the mean height of a male in the U.S.
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